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Completed Project Brandon's mild 4.0 OHV build
- Thread starter Brandon96
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Brandon96
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.95v
ergg.. So I guess the last thing to suspect wold be the MAF. Even though it's getting/giving proper voltage. Maybe's it's just screwing up during driving.
ergg.. So I guess the last thing to suspect wold be the MAF. Even though it's getting/giving proper voltage. Maybe's it's just screwing up during driving.
Ronin8002
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Hmm too bad I was hoping that it would have been the TPS. Yeah the MAF could be messed up somehow.
Is there a dyno near you that can do wideband o2 logging? That might help determine the problem.
Is there a dyno near you that can do wideband o2 logging? That might help determine the problem.
jd4242
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ive never been able to hold a dead on steady rpm and dont think with this cam you will be able too,thats just normal.but the mpg thing i have no clue,what mpg are you really getting?if it runs good a gets good mpg,just stop looking at that damn screen!!
Brandon96
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lol JD..
The only thing that's really pissing me off is I can feel an extensive amount more power when the truck is getting the air/fuel mixture right, and it's very obvious when it's getting it wrong/rich.
Like I'm talking 21+mpg and 10mpg @ 65mph.. ERGG!!!
I'm looking into the MAF today if it doesn't rain, may go pick up a junker and throw it in. I'm pretty sure I can pick up an MAF off any 2nd Gen, or EGR'ed, OHV right? What about the SOHC's?
The only thing that's really pissing me off is I can feel an extensive amount more power when the truck is getting the air/fuel mixture right, and it's very obvious when it's getting it wrong/rich.
Like I'm talking 21+mpg and 10mpg @ 65mph.. ERGG!!!
I'm looking into the MAF today if it doesn't rain, may go pick up a junker and throw it in. I'm pretty sure I can pick up an MAF off any 2nd Gen, or EGR'ed, OHV right? What about the SOHC's?
Pollarican
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Double and triple check your all the wiring harness pins are seated in the PCM - I swapped computers from an auto to manual when I swapped transmissions and my idle went from perfect to terrible. Turns out one pin popped out the back of the PCM - replugged it and it ran perfect.
Check your CPS - maybe the new cam is throwing the computer off due to its different duration?
I spent the last 20 minutes skimming the thread - have you gotten a tune yet?
Check your CPS - maybe the new cam is throwing the computer off due to its different duration?
I spent the last 20 minutes skimming the thread - have you gotten a tune yet?
Brandon96
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CPS is new/clean and workin' properly. Nope, no tune, just haven't had the extra funds to get it done yet, I keep running into unforseen payments and problems this thing is giving me.
The only reason I haven't sucked it up and put a tune on it is because of it's ability to run perfect sometimes, but other times run like complete crap. It's really hard to explain but I feel as if it's a hard part/sensor issue rather than a tuning issue. Though I am fully aware of the benefits of a tune to assist all of the work I have done, I just want to be sure all my stuff is working properly before I put money into a tune.
I think I've narrowed it down to some sort of MAF issue. I tried cleaning it this evening and running it around, still ran like crap HOWEVER, I did come up with this;
When I start the truck up with the MAF plugged in, it runs like crap. I then unplug the MAF with the truck running, it straightens out and runs fine. No RPM surge no nothing. It idles and when warm stays within a 50rpm fluctuation, and it runs like a dream on the road.
If I turn it off with the sensor unplugged and try to start it back up leaving the MAF unplugged, it runs like crap, tries to stall whenever I put it into D and stalls most of the time I try to accelerate from a stop. also this is when the CEL, MAF-p0102, get's thrown (after I start it up without the MAF plugged in)
I'm reeeaaally beginning to think this is definitely an MAF issue. It just decides to act up when it feels like it and hide when I search for the problem.
The only reason I haven't sucked it up and put a tune on it is because of it's ability to run perfect sometimes, but other times run like complete crap. It's really hard to explain but I feel as if it's a hard part/sensor issue rather than a tuning issue. Though I am fully aware of the benefits of a tune to assist all of the work I have done, I just want to be sure all my stuff is working properly before I put money into a tune.
I think I've narrowed it down to some sort of MAF issue. I tried cleaning it this evening and running it around, still ran like crap HOWEVER, I did come up with this;
When I start the truck up with the MAF plugged in, it runs like crap. I then unplug the MAF with the truck running, it straightens out and runs fine. No RPM surge no nothing. It idles and when warm stays within a 50rpm fluctuation, and it runs like a dream on the road.
If I turn it off with the sensor unplugged and try to start it back up leaving the MAF unplugged, it runs like crap, tries to stall whenever I put it into D and stalls most of the time I try to accelerate from a stop. also this is when the CEL, MAF-p0102, get's thrown (after I start it up without the MAF plugged in)
I'm reeeaaally beginning to think this is definitely an MAF issue. It just decides to act up when it feels like it and hide when I search for the problem.
GRNMACHINE
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After all the blood, sweat, hours etc you have put into lets hope it is only the MAF!
Fordexplorerguy1
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Did you ever get the problem solved? I was told that sea foam can fowl plugs...
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Yup, Im feeling for you too Brandon. Ive been living constant issues also. Im not doing anything other than fixing broken stuff for a while. It seems with our aging trucks that anything touched breaks. I just replaced my rad. Hopefully when I get my front end noises sorted out I'll be ok for winter.
Let us know how your making out.
Let us know how your making out.
Xeek
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nahhh. if all else fails. floor it, shoot craploads of black smoke to disorient you then win lol
now you got me thinking about having a pull contest with you for real lol
now you got me thinking about having a pull contest with you for real lol
jd4242
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you talking about With the diesel.pfff ill pass on that
jd4242
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Ok you in 2wd me in 4x4 and we chain axle to axle ok.otherwise your way heaver and way to high to hook to bumper.that thing is prob only in the 300s for tq.
Brandon96
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Just now got back into this forum.. crap I've missed a lot.
Dono, everything's fixed, turned out to be a bad TPS, and a bad "SSB" - Shift Solenoid B, or 2nd gear.. causing the truck to jerk in and out of Overdrive.
Freddy, JD... once I get my transmission fixed (that I fried up in GWNF wheeling with you guys).. I'm down for a couple truck pulls.
Dono, everything's fixed, turned out to be a bad TPS, and a bad "SSB" - Shift Solenoid B, or 2nd gear.. causing the truck to jerk in and out of Overdrive.
Freddy, JD... once I get my transmission fixed (that I fried up in GWNF wheeling with you guys).. I'm down for a couple truck pulls.
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Congratulations Brandon!
Im still fighting with mine. Its always at least 1 thing I'm dealing with. I have a lower ball joint with at least 1/4 inch up/down play in it that needs to be tackled right away, and now my motor started running rough at idle. Im jealous you have yours working as it should. Maybe I should pay you to get mine working.
Im still fighting with mine. Its always at least 1 thing I'm dealing with. I have a lower ball joint with at least 1/4 inch up/down play in it that needs to be tackled right away, and now my motor started running rough at idle. Im jealous you have yours working as it should. Maybe I should pay you to get mine working.
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